Leaning-wheel grader



F. E. ARNDT LEANING WHEEL GRADER Jan. 3, 1928.'

3 Sheets-Sheet l INVENTOR. m 17772 $11 Original Filed Oct. 25. 1926 Jan.3, 1928.

F. E. ARNDT LEANING WHEEL GRADER Original Filed Oct. 25. 192? aSheets-Sheet 2 n I INVENTOR.

Kl. I777: cli

ATTORN Patented Jan. 3, 1928.

UNITED STATES FRANKLIN n. Artnnr, or canon, OHIO, nssrenon T rm: GALIONmon woaxse OHIO.

HEISSUED Substitute for application Serial No, 144,035 fi1ed October 25,1926. This application filed Kay 5, 1927.

- Serial No. 189,043. a

This invention comprehends and relates to road graders and moreespecially to road graders of the leaning wheel type, in which theground or' traveling wheels can be canted ortilted to the left or to theright to prevent side draft and keep the machme effectually in line andup to the work in hand, this present application being a sub stituteformy abandoned application serial Number 144,035, filed October 25, 1926.

The invention has for its primary object a novel and very eflicientleaning wheel grader in which the main framework of the machine is soconstructed that it'can be swung in the arc of a circle to the right orto the left as may be necessary, according to the conditions met with,and in which the load or weight of the framework upon' the rear axlewill always be evenly balanced or distributed and both rear wheels willhave the same tractive effect or action, in contradistinction to thattype of. grader in which the framework is shifted transversely on therear axle.

With this and other objects in view, as will more fully appear as thedescription proceeds, reference is had to the accompany-.

ing drawings, wherein Figure 1 is a side elevation of a constructed 'inaccordance with my mven tion, w

Fig. 2 is a top plan view thereof;

Fig. 3 is a rear elevation;

Fig. 4 is a front elevation;

Fig. 5 is anenlarged top plan view of the 'rear axle and a portion ofthe main frame;

Fi 6 is a rear elevation of the machine,

showing the frame and axle relatively shifted; p v v I Fig. 7 is afragmentary section through the arcuate guide a Figs. 8, 9, and 10 arediagrammatic plan views; and f Fig. 11 is a fragmentary top plan .viewshowmg thepreferred manner of mounting the screw 46 upon the main frame;

Referring to these drawings 10 designates the. longitudinall beams orchannel the main frame of the .machine.

irons wh1ch constitute tatably mounted in any suitable manner upon abolster 11 which extends downwardly.

grader I ing rearward to the extending supportingv Thesechannel irons-attheir forward ends are roto the front axle 12. This front axle is formedof two angle irons and disposed between these angle irons are theknuckles 13, the stubs of which support the forward wheels 14. The.upwardly extending arms of the wheel supporting knuckles 13 areconnected by means of two transversely extending angle irons-15. Both ofthese angle irons support; upon them arcuate racks 16 ,on a shaft 28which extends out through the housing and is operatively connected tothe flexible-actuating shaft 29, which extends rearward to the operatorsplatform 30 where it is connected to suitable operating means, aswill belater described.

Pivoted to the forward ends of the arched eye beams -10 are the drawbars31 which extend rearward and downward and carry the usual circle.Engaged with. this circle for rotative movement are the scraper or bladesupportin beams 32 which at their rear ends exten downward and thenforward and pivotally support the scraper 33. i

The scraper and its'supportin means are such that the scraper may betilted ormay berotated or otherwise adjusted. I do not 7 wish to belimited to an particular means as this forms no part 0 my invention, an

Operatively connected to the front axle is the tongue 34 which isswingable laterall by means of the flexible shaft 35 exten olperatorsplatform. Swingable tongues of t is nature are well known and form nopart of m invention, and, therefore, require no furt er description.

Thfezrear axle. is formed by two transversely extending angle irons 36andthis rear axle, while it supports the rear ends of the beams 10, isswingably connected to I may be'adjusted into vertical position by meanslater to be described.

The rear axle is connected to the frame beams 10 by means of link beams40 which are formed of channel iron. Each of these beams at its forwardend is pivotally mounted against a spacing block 41, through which abolt 42 passes, and which may engage the corresponding beam 10. Thisblock 41 and the pivot bolt 42'are disposed at the point where thecorresponding eye beam extends downward and then rearward and about twofeet in advance of the rear ends of the beams 10.

Attached to the under face of the rear end of each beam 10 is an angularlip 43 and each of the swinging beams 40 or links has mounted upon it amember 44 formed with an arcuate, transversely extending channel 45,whichengages the angular lip 43 and prevents any downward movement ofthe link beam 40 with reference to the rear end of the main beam 10, butallows the swinging beam 40 to swing into an angular relation to thecorresponding beam 10 without becoming disengaged from the beam 10.

Operatively mounted upon one of the beams 10 is a transversely extendingscrewthreaded shaft 46 carrying a nut 47. This screw threaded shaft alsocarries a beveled gear wheel 48, and mounted in a suitable bracket uponthe end of the main frame formed by the beams 10, is a verticaloperating shaft 49 which, at its lower end, carries a beveled gear wheel50 engaging the beveled gear wheel 48. This operating shaft extends upadjacent the rear end of the operators platform 30 and at its upper endcarries the operating handle 51. The nut 47 is connected by a link 52 toone of the swinging beams 40, this'link being pivoted to this swingingbeam, and as these beams 40 are each pivotally connected to the rearaxle, it

follows that as the--nut 47 is shifted in one direction or the other,both of the swinging beams 40 will be swung in one direction or theother and the frame will be moved to the right or to the left in the arcof a circle. Thus the main frame may be held with its middle incoincidence with the draft line of the machineor with the swinging beams40 disposed in angular relation to the beams 10, thus swinging orangling the main frame to any desired position within the range of themachine to'the right or left.

For the purpose of canting or leaning the rear wheels, I mount upon theconnecting aeeaaoa bars 39 the arcuate racks 52', and mount upon therear axle the housing 53, wherein 1s disposed a worm wheel 54 and theshaft of which-carries pinions 55 which engage the racks. A verticalshaft 56 extends down through a lateral extension of the housing 53 andhas upon it a worm 57 which en- 7, than when the connecting rod isshifted in one direction or the other to lean the wheels.

This arcuate rack 52 and the arcuate rack 16 compensate for thisapproach or recession of the connecting rod or rods to ,or from theoperating pinion therefor.

It will be seen that with this construction the front wheels or the rearwheels, or both,

construction resides in the fact that the main frame-which is composedof the beams 10 a and the continuations thereof constituted bycontradistinction to that type or construction 0 n n s of leaning wheelgrader 1n which there IS a transversely shiftable rear axle, or in otherwords, where the frame itself shifts transversely on the rear axle, itbeing evident that in such last named type or construction of machine,when the frame is shifted over to the right or to the left, the entireweight of the machine is thrown practically upon that end of the axletowards which the frame 65 ,wheels carried upon the rear axle,'andmanuis shifted, leaving the opposite wheel substantially without balanceor tractive effect.

will, of course, be understood that in the foregoing description andaccompanying drawings, all disclosures as to the mechanism for raising,lowering, tilting, or otherwise adjusting the blade, is purposelyomitted and -of the main frame.

that in actual practice this machine will be provided with manuallycontrolled means for this purpose so that the scraper blade may beraised or lowered, shifted laterally in either direction, angled to anydesired dc gree .with relation to the line of draft, and tilted to anyextent required.

While I do not wish to be limited to this, I preferably connect the twobeams of the main frame at their rear ends by a cross bar 58 to which isbolted a guide bar 59 upon which the nut 47 slides, this guide bar 59carrying the brackets which support the ends of worm 46 and thevertical-shaft 49. g It is necessary that the nut 47 be slidingly enagedwith a guide bar 59 so as to prevent the nut from turning and eliminateany strain upon the pin connection of the nut and the link '52;

It will be obvious that theidetails of construction as illustrated mightbe modified in naniy ways'without departlng from the spirit of-t einventionvas defined in the appended claims.

. I claim:

1. An implement having a main frame formed of flexibly connectedsections, a forward axle'having wheels. and to which the main frame ispivotally connected, a rear axle to which the rear sections of the mainframeare pivotally connected, and manually operable means for anglingthe sections 2. An implement having a main frame formed of main sectionsand rear sections pivotally connected thereto, a forward axle to whichthe main frame is pivoted, a rear.

axle carried by the rear sections of the main frame, and manuallyoperable means for angling the main frame.

3. An implement having a main fram formed of main sections and rearsections pivotally connected thereto, a forward axle to which the mainframe is pivoted, a rear axle carried by the rear sections of the mainframe, and manually operable means for angling the main frame, tiltablewheels carried by the rear axle, and manually operable means for tiltingthe wheels.

4. A grader comprising a main frame including two longitudinallyextending frame beams, two longitudinally extending link bars pivotallyconnected to the frame beams and swingable laterally in eitherdirection, a rear axle pivoted to the link bars to permit lateralswinging movement of the main frame relative to the rearaxle, tiltableally operable means onthe'rear axle whereby the wheels may be tilted.

5. A grader comprising a main frame, including two longitudinallyextending frame beams, two longitudinally extending. link bars pivotedto the frame beams forward of their rear ends for oscillation laterallyin either direction, means on the link bars and beams for slidinglyengaging the link bars with the beams in any laterally adjusted positionof the link bars, a rear axle pivotally mounted upon the rear ends ofthe link bars and disposed rearward of the main beams,

' and wheels carried upon said rear axle.

6. A grader comprlsing a main frame ineluding two longitudinallyextending frame beams, two longitudinally extending link bars pivoted tothe frame beams forward of their rear ends for oscillation laterallyineither direction, means on the link bars and beams for slidinglyengaging the link bars with the beams in any laterally adjusted positionof the link bars, a rear axle pivotally mounted upon the rear ends ofthe link bars and disposed rearward of the main beams, tiltable wheelsmounted upon the ends of the rear axle, and means carried by the rearaxle whereby the wheels may be manu- 8. A grader comprising a main frameineluding two-longitudinally extending frame beams, two longitudinallyextending link bars pivotally connected to the rear ends of the framebeams for lateral movement in a horizontal plane and in either directionand extending rearward of the rear ends of the frame beams, each of theframe beams and the corresponding link bar being formed to provide oneanarcuate guide and the other having a lip engaging said guide, a rearaxle formed of two transversely extending bars spaced from each otherand operatively pivoted to the rear ends of the link bars,

knuckles pivotally mounted between said rear axle bars at theextremities thereof, wheels carried by said knuckles, the knuckles beingmovable in a vertical plane to tilt the wheels, a connecting rodconnecting the knuckles for unitary movement, and manually operablemeans mounted upon the rear axle for tilting said wheels;

9.'A grader comprising a main frame in- 4E eaasoa eluding twolongitudinally extending frame transversely shifting the link barsincluding 10 beams, two link bars pivotally engaged with a screw shaftmounted upon the main frame the frame beams forward of the rear ends atthe rear end thereof, an operating shaft thereof 'for swinging movementin a horifor the screw shaft, a nut through which the 5 zontal plane, arear axle pivotally connected screw shaft passes, and a link operativelyto the link bars and transversely movable connecting the nut to one ofsaid link bars. 15 therewith, 'tiltable wheels mounted upon the Intestimony whereof I afiix my signature. rear axle, means carried on therear axle for manually tilting said wheels, and means for FRAJNIN E.ARNDT.

